Special Requirements ?nx must be a power of 2. ?The index array must be set up by bitrev_index before the function DSP_bitrev_cplx is called. ?If nx ?4K, one can use the char (8-bit) data type for the "index" variable. This would requ

自己编写的语音信号的采集，fft变换（两种），以及信噪比的计算！希望对大家有所帮助！-I have written the speech signal acquisition, fft transform (two kinds), and the calculation of signal to noise ratio! We want to help!

create FFT file analsys audio